• ISSN 2097-1893
  • CN 10-1855/P
张梓荣,王宏伟,陈学良,范志凯. 2022. 强震下钢筋混凝土框架和砖混结构的动力响应分析. 地球与行星物理论评,53(1):92-100. DOI: 10.19975/j.dqyxx.2021-036
引用本文: 张梓荣,王宏伟,陈学良,范志凯. 2022. 强震下钢筋混凝土框架和砖混结构的动力响应分析. 地球与行星物理论评,53(1):92-100. DOI: 10.19975/j.dqyxx.2021-036
Zhang Z R, Wang H W, Chen X L, Fan Z K. 2022. Analysis of dynamic response of frame and brick-concrete structure under strong earthquake: A case study of the M6.4 Yangbi, Yunnan earthquake. Reviews of Geophysics and Planetary Physics, 53(1): 92-100. DOI: 10.19975/j.dqyxx.2021-036
Citation: Zhang Z R, Wang H W, Chen X L, Fan Z K. 2022. Analysis of dynamic response of frame and brick-concrete structure under strong earthquake: A case study of the M6.4 Yangbi, Yunnan earthquake. Reviews of Geophysics and Planetary Physics, 53(1): 92-100. DOI: 10.19975/j.dqyxx.2021-036

强震下钢筋混凝土框架和砖混结构的动力响应分析以云南漾濞6.4级地震为例

Analysis of dynamic response of frame and brick-concrete structure under strong earthquake: A case study of the M6.4 Yangbi, Yunnan earthquake

  • 摘要: 以2021年5月21日云南漾濞6.4级地震所获取的漾濞台强震动记录作为输入,对不同高度(低层、多层和高层)钢筋混凝土框架结构以及一低层砖混结构进行动力时程分析,探讨不同高度钢筋混凝土框架结构动力响应特点,对比砖混结构与低层框架结构地震响应的不同,并对结构进行性能评定. 主要分析结果表明,所有结构的楼层加速度响应中,竖向加速度放大效应显著,尤其是低层框架;框架结构Y方向楼层傅里叶幅值谱峰值主要在1~2.5 Hz频率范围;多层框架的层间位移角响应更大;所有框架结构以及设防的砖混结构层间位移角均未超过中等破坏限值;与低层框架结构相比,基本周期更短的砖混结构水平向楼层加速度放大效应更为显著;设防的砖混结构具有良好的抗震性能. 分析结果可为灾区震害评估和震后修复提供指导,同时为建筑结构抗震设计提供一定参考.

     

    Abstract: Taking the strong motion records of Yangbi Station obtained by the May 21, 2021 M6.4 Yunnan Yangbi earthquake as input, this study performed dynamic time history analysis on frame structures of different heights and a low-rise brick-concrete structure. Based on this, we explore the response characteristics of the frame structure in the strong earthquake, compare the difference between the seismic response of the brick-concrete structure and low-rise frame structure, and evaluate the performance of the brick-concrete structure. The main analysis results show that the vertical acceleration amplification effect is significant in the floor acceleration response to all structures, especially in the lower frame. The peak value of the floor Fourier amplitude spectrum for the frame is mainly in the frequency range of 1~2.5 Hz in Y direction. Compared with the low-rise and high-rise, the maximum inter-story drift ratios response of the multi-story frame is greater. The inter-story drift ratios of all structures do not exceed the medium damage limit. Compared with the low-rise frame structure, the brick-concrete structure of a shorter basic period has a more significant horizontal acceleration amplification effect to the floor. The fortified brick-concrete structure has good aseismic performance. The analysis results can provide reference for the analysis and evaluation of earthquake damage of buildings after strong earthquake.

     

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